How to go about converting DoVi RPU to HDR10+ metadata?

[quietvoid]

How to go about converting DoVi RPU to HDR10+ metadata?

[quietvoid]

No, the two formats are different.
There are patents on converting from one to another but the detailed steps are not public.

Since neither HDR10+ or Dolby Vision analysers are publicly available, this isn't a trivial task.
And I don't plan on looking into it either.

[quietvoid]

HDR10+ with VP9 relies on the container for the metadata, it is not in the stream.
I don't know if Youtube videos are HDR10+ when played on a supported display.

[Gronis]

I can see that it is possible to create a dolby vision RPU using HDR10+ metadata json file, so there seem to be some compatibility between the formats.

[quietvoid]

The only thing they share is the maximum brightness of the scene.

HDR10+ requires image analysis like the distribution (histogram) of the brightness in every frame, which Dolby Vision doesn't have.

So it cannot be converted without processing the decoded image.

[sagz]

Is the image processing easy to do? aka, there's a set formula to calculate the histogram? considering that decode speeds are so good and in so many HW devices, that shouldn't be too hard to do for users with all sorts of computers if they wanna convert.

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[quietvoid]

It shouldn't be too complicated. There's no public reference or implementation though.

[joaoserra]

There are patents on converting from one to another but the detailed steps are not public.

Patents on converting DV metadata to HDR10+? I understand that the patents don't have the exact details, but exactly what patents? I would like to take a look at those.

Thanks!

[quietvoid]

I didn't keep a note of it.